60939400637 has 4 divisors (see below), whose sum is σ = 60947480700. Its totient is φ = 60931320576.

The previous prime is 60939400633. The next prime is 60939400649. The reversal of 60939400637 is 73600493906.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27673653316 + 33265747321 = 166354^2 + 182389^2 .

It is a cyclic number.

It is not a de Polignac number, because 60939400637 - 2² = 60939400633 is a prime.

It is a super-2 number, since 2×60939400637² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 60939400591 and 60939400600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60939400633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028708 + ... + 4043805.

It is an arithmetic number, because the mean of its divisors is an integer number (15236870175).

Almost surely, 2^60939400637 is an apocalyptic number.

It is an amenable number.

60939400637 is a deficient number, since it is larger than the sum of its proper divisors (8080063).

60939400637 is an equidigital number, since it uses as much as digits as its factorization.

60939400637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8080062.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 60939400637 in words is "sixty billion, nine hundred thirty-nine million, four hundred thousand, six hundred thirty-seven".